Disposable vacuum cleaner filter bag



Dec. 24, 1968 J. J. FESCO DISPOSABLE VACUUM CLEANER FILTER BAG Filed Oct. 4, 1965 INVENTOR. t/OIVA/ M m/9 United States Patent C F 3,417,550 DISPOSABLE VACUUM CLEANER FILTER BAG John J. Fesco, Baldwin, N.Y., assignor to Studley Paper Company, Inc., a corporation of New York Filed Oct. 4, 1965, Ser. No. 492,395 3 Claims. (Cl. 55-376) ABSTRACT OF THE DISCLOSURE A vacuum cleaner bag provided with a stiff planar collar about the inlet of the bag and extending beyond the upper end of the bag including a support therefor at the upper end.

In certain types of vacuum cleaners, the filter bags are maintained in an upright or vertical disposition, the filterladen air entering near the upper end of the bag and then passing down through the bag to deposit its contents at the bottom of the bag. This type of bag is mounted on the output end of the air input conduit of the vacuum cleaner and is supported solely by said conduit. As the amount of dirt Within the bag continues to increase, the weight thereof also increases and applies a downward pull or pressure at the portion of the bag which is mounted on the air input conduit. This frequently results in wrinkling of the bag so as to decrease the capacity thereof and it also frequently results in the tearing or rupturing of the bag due to the weight of the contents thereof.

It is an object of the present invention to obviate the foregoing disadvantages of prior art vacuum cleaner filter bags.

It is another object of the present invention to provide a bag of the type which is mounted in upright disposition within a vacuum cleaner and which is provided with sufficient support means to prevent the rupturing thereof by the weight of the contents thereof.

It is another object of the present invention to provide a generally improved vacuum cleaner filter bag which can be manufactured and sold at a relatively low cost and which will have a long and useful life span.

Other and further objects and advantages of the present invention will be readily apparent to one skilled in the art from a consideration of the following specification taken in connection with the appended drawings.

In the drawings, which illustrates the best mode presently contemplated for carrying out the invention:

FIGURE 1 illustrates a vacuum cleaner bag pursuant to the present invention, mounted in operative disposition within a vacuum cleaner;

FIGURE 2 is an elevation view of a bag pursuant to the present invention with a portion thereof broken away for purposes of illustration;

FIGURE 2A is an elevation view of the collar utilized with the bag of the present invention;

FIGURE 3 is a sectional view on an enlarged scale taken along the line 33 of FIGURE 2;

FIGURE 4 is a fragmentary detailed view similar to FIGURE 1 and illustrates the bag in operative disposition within a vacuum cleaner; and

FIGURE 5 is a fragmentary detailed view similar to FIGURE 2 and illustrates the bag in an expanded condition thereof.

Referring now to the drawings in detail, there is shown a vacuum cleaner bag pursuant to the present invention. The bag 10 comprises a bag body 12 which is provided with a collar 14 pursuant to the present invention.

The bag body 12 is formed of suitable filter-sheet material preferably paper of the type which is used for vacuum cleaner bags. The bag body 12 may be formed in any suitable material and as here shown, the bag body Patented Dec. 24, 1968 12 is of the type illustrated and described in my Patent No. 2,961,063, issued Nov. 22, 1960. The bag body may be manufactured or formed in the manner described in said patent. As here shown, the bag body 12 comprises a front wall panel 16 and a complementary rear wall panel 18. The front wall panel 16 is provided with opposing end pleats 20 and 22, and the rear wall panel is provided with similar opposing end pleats 24 and 26. The front wall panel is provided also with inturned free end portions 28 and 30 and the rear Wall panel is provided with similar free inturned end portions 32 and 34 which are adhesively secured to the inturned end portions 28 and 30 respectively. The bag is closed at its upper end as at 36 and is also closed at its lower end as at 38. The rear wall panel 18 is provided with a conventional aperture 40 for the entry of dust-laden air into the bag.

Pursuant to an important aspect of the present invention, the bag body 12 is provided with the collar 14. As here shown, the collar 14 is substantially in the form of a tear-drop, being provided with a relatively wide lower or bottom portion 42 and with a narrower tapering upper portion 44. The lower portion 42 is provided with an enlarged aperture 46 and adjacent the tapered end 48 there of the narrower collar portion 44 is provided with a smaller aperture 50. The outer surface of the collar 14 is provided with a resilient fitting 52, preferably a portion of rubber-like sheet material which is secured thereto to overlie the aperture 46 defined therein. The fitting 52 is provided with an aperture 54 which is in registry with the aperture 46 and it will be noted that the diameter of the aperture 54 is less than the diameter of the aperture 46. The greater portion of the inner surface of the collar 14- is provided with a suitable adhesive 56 as best shown in FIGURE 2A. It will be noted that the adhesive extends almost up to the aperture 50. The adhesive covered surface of the collar 14 is secured to the rear wall panel 18 so that the two apertures 54 and 46 in the fitting 52 and the collar respectively, are in registry with the aperture 40 in the panel 18 as best shown in FIGURE 2 with the outer surface of the collar and the fitting 52 exposed. It will be noted that the narrow end portion 48 of the collar 14 and the aperture 50 defined therein extend above the upper closed end 36 of the bag body 12 as best shown in FIGURE 2.

The bag 10 of the present invention may be used in the industrial type of vacuum cleaner 58 shown in FIGURE 1. As here shown, the vacuum cleaner 58 comprises a chassis 60 mounted on wheels 62. The chassis mounts a removable cannister 64. The chassis 60 is provided with a conventional air intake 66 which is connected to an air input conduit 68. At its outlet end 70, the conduit 68 mounts a fixture 72 which is provided with a hanger rod 74. The conduit 68 also mounts a bafile 76 between the fixture 72 and the end 70 thereof.

In order to mount the bag 10 in position on the outlet end 70 of the conduit 68, the cannister 64 provided with a handle 78, is removed from the chassis 60. The bag is then mounted on the conduit end 70 so that the latter extends through the fitting 52, the collar 14 and the rear wall 18 of the bag into the latter through the registering apertures 54, 46 and 40 as best shown in FIGURE 4. The hook end 80 on the hanger rod 74 is inserted through the aperture 50 at the upper end of the collar 14 so that the bag and the collar are suspended from the hanger rod. The cannister 64 may then be replaced on the chassis 60.

When the vacuum cleaner 58 is in operation, dirt-laden air is drawn in the usual manner into the air intake 66 so as to pass upwardly through the conduit 68 as indicated by the arrows 82. The air then passes out of the end 70 of the conduit into the bag 10 as indicated by the arrow 84. The dirt-laden air drops to the bottom of the bag as the air flows to the bottom of the bag as indicated by the arrows 86 in FIGURE 1. When the bag is filled with the air entering therein through the conduit 68, the bag extends from the full-line position thereof shown in FIG- URE 2 to the broken-line position thereof shown in said figure, the bag assuming the expanded condition thereof shown in FIGURE 5, the arrows 88 indicating the direction in which the bag spreads under the influence of the air drawn therein through the conduit 68.

As the dirt drawn in with the air settles to the bottom of the bag and builds up, the weight thereof increases. However, the added weight will not cause the bag to wrinkle or tear due to the support provided by the collar 14. Prior art bags were supported solely on the end 70 of the conduit with the result that the weight of the dirt carried into the bag frequently caused the bag to rip at the conduit or to wrinkle around the conduit end 70 so as to decrease the capacity of the bag. However, pursuant to the present invention, the collar 14 being mounted on the hook 80 provides additional support for the bag so that the collar now serves the additional function of being a support for the bag. Any pressure applied to the collar by the weight of the contents of the bag is spread over a large area of the bag extending between the hanger hook 80 and the conduit end 70 and over a relatively large portion of the panel 18 to which the support collar is secured.

In view of the foregoing, it will be apparent that there has been illustrated and described a highly novel vacuum cleaner filter bag provided with a collar 14 which serves the additional function of being a support for the bag.

1 claim:

1. A vacuum cleaner filter bag comprising a bag body constructed of an air pervious material and having a pair of side walls which oppose one another and are closed at the opposite ends thereof, one of said side walls having an air inlet aperture defined therein, and a relatively stiff planar member secured to said one wall, said member having a collar portion provided with an aperture in registry with said air inlet aperture and a support portion projecting from said collar portion, said support portion having a free end which projects beyond the adjacent end of the bag body, and an aperture defined in said free end.

2. A vacuum cleaner filter bag comprising a bag body constructed of an air pervious material and having a pair of side walls which oppose one another and are closed at the opposite ends thereof, one of said side walls having an air inlet aperture defined therein, and a relatively stiff planar member secured to said one wall, said member having a collar portion provided with an aperture in registry with said air inlet aperture and a support portion projecting from said collar portion, said support portion having a free end which projects beyond the adjacent end of the bag body, and an aperture defined in said free end, said collar portion being wider than said support portion, and said support portion tapering from said collar portion to said free end thereof.

3. A vacuum cleaner filter bag comprising a bag body constructed of an air pervious material and having a pair of side walls which oppose one another and are closed at the opposite ends thereof, one of said side walls having an air inlet aperture defined therein, and a relatively stiff planar member secured to said one wall, said member having a collar portion provided with an aperture in registry with said air inlet aperture and a support portion projecting from said collar portion, said support portion having a free end which projects beyond the adjacent end of the bag body, and an aperture defined in said free end, and a resilient fitting overlying said collar portion, said fitting having an aperture which is in registry with said air inlet aperture and which has a smaller diameter than the latter.

References Cited UNITED STATES PATENTS 1,835,770 12/1931 Gasner et a1 25366 2,784,800 3/1957 Segesman 55375 X 2,815,090 12/1957 Humphrey 55375 X 2,961,063 11/1960 Fesco 5538l 3,017,070 1/1962 London 229-62 3,107,989 10/1963 Fesco 55381 3,197,118 7/1965 Meyerhoeffer 55361 X 3,227,358 1/1966 LaGuerre 229-54 3,242,654 3/1966 Kornstein et al 55376 HARRY B. THORNTON, Primary Examiner.

B. NOZICK, Assistant Examiner.

US Cl. X.R. 

